Water Quality in Aurora, CO (80011)

EPA violation data for public water systems serving ZIP code 80011.

Past Health-Based Violations

2 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 151 monitoring/reporting violations.

More violations than 98% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

53,695

Population

23

Water Systems

153

Violations (5yr)

2

Health-Based

Location

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Water Systems Serving This Area (23)

Aurora City Of

Surface water 533,407 people served
0 violations
Lead tested: 2.5 ppb (limit: 15 ppb)

Thornton City Of

All resolved
Surface water 226,465 people served
8 violations (5yr) · All resolved
Lead tested: 2.3 ppb (limit: 15 ppb)

Westminster City Of

All resolved
Surface water 202,078 people served
3 violations (5yr) · All resolved
Lead tested: 1.3 ppb (limit: 15 ppb)

South Adams County Wsd

Purchased surface water 74,341 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

East Cherry Creek Valley Wsd

All resolved
Purchased surface water 66,130 people served
4 violations (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Englewood City Of

1 health-based
Surface water 57,332 people served
6 violations (5yr) · 1 health-based · All resolved
Lead tested: 5 ppb (limit: 15 ppb)

Brighton City Of

1 health-based
Purchased surface water 56,304 people served
1 violation (5yr) · 1 health-based · All resolved
Lead tested: 2 ppb (limit: 15 ppb)

Southgate Wsd

Purchased surface water 55,000 people served
0 violations

Northglenn City Of

Surface water 48,927 people served
0 violations
Lead tested: 1.7 ppb (limit: 15 ppb)

Southwest Metropolitan Wsd

Purchased surface water 48,648 people served
0 violations

Cherry Creek Village Wd

Purchased surface water 9,215 people served
0 violations

Emil Lenes Sirloin House

Groundwater 200 people served
0 violations

Sirloin House

Groundwater 150 people served
0 violations

Willow Brook Metro District

All resolved
Groundwater 120 people served
131 violations (5yr) · All resolved
Lead tested: 10 ppb (limit: 15 ppb) Copper tested: 1390 ppb (limit: 1300 ppb)

Sky Ranch Industrial Park

Groundwater 75 people served
0 violations

Aurora Airpark

Groundwater 68 people served
0 violations

Bafb1610

Groundwater 25 people served
0 violations

Hwy Dept - Deer Trail

Groundwater 25 people served
0 violations

Buckley Air Natl Guard Base

Groundwater 0
0 violations

Cdot Larkspur Rest Area South

Groundwater 0
0 violations

Cdh Elizabeth Trlr Park

Groundwater 0
0 violations

Cdot Larkspur Rest Area

Groundwater 0
0 violations

Super Express

Groundwater 0
0 violations

Contaminants Found

Revised Total Coliform RuleHealth-Based

Missed testing deadlines — not a detection of bacteria.

5 violations
All resolved
TTHMHealth-Based
1 violation
All resolved
Interim Enhanced Surface Water Treatment RuleMonitoring
4 violations
All resolved
Surface Water Treatment RuleMonitoring
4 violations
All resolved
Gross Alpha, Excl. Radon and UMonitoring
3 violations
All resolved
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

2 violations
All resolved
Combined UraniumMonitoring
2 violations
All resolved
Combined Radium (-226 and -228)Monitoring
2 violations
All resolved
NitrateMonitoring

At high levels, nitrate can cause blue baby syndrome in infants.

2 violations
All resolved
BromateMonitoring
1 violation
All resolved
ChloramineMonitoring
1 violation
All resolved
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

1 violation
All resolved
1,1,1-TrichloroethaneMonitoring
1 violation
All resolved
o-DichlorobenzeneMonitoring
1 violation
All resolved
DiquatMonitoring
1 violation
All resolved
Antimony, TotalMonitoring
1 violation
All resolved
HEXACHLOROBENZENEMonitoring
1 violation
All resolved
StyreneMonitoring
1 violation
All resolved
Di(2-ethylhexyl) phthalateMonitoring
1 violation
All resolved
BariumMonitoring
1 violation
All resolved
EndothallMonitoring
1 violation
All resolved
1,2-DIBROMO-3-CHLOROPROPANEMonitoring
1 violation
All resolved
HexachlorocyclopentadieneMonitoring
1 violation
All resolved
p-DichlorobenzeneMonitoring
1 violation
All resolved
ETHYLENE DIBROMIDEMonitoring
1 violation
All resolved
1,2,4-TrichlorobenzeneMonitoring
1 violation
All resolved
CadmiumMonitoring
1 violation
All resolved
Total Polychlorinated Biphenyls (PCB)Monitoring
1 violation
All resolved
SeleniumMonitoring
1 violation
All resolved
1,1,2-TrichloroethaneMonitoring
1 violation
All resolved
TolueneMonitoring
1 violation
All resolved
DICHLOROMETHANEMonitoring
1 violation
All resolved
1,2-DichloropropaneMonitoring
1 violation
All resolved
BHC-GAMMAMonitoring
1 violation
All resolved
2,4,5-TPMonitoring
1 violation
All resolved
MethoxychlorMonitoring
1 violation
All resolved
TrichloroethyleneMonitoring
1 violation
All resolved
ChromiumMonitoring
1 violation
All resolved
trans-1,2-DichloroethyleneMonitoring
1 violation
All resolved
ToxapheneMonitoring
1 violation
All resolved
LASSOMonitoring
1 violation
All resolved
Benzo(a)pyreneMonitoring
1 violation
All resolved
Heptachlor epoxideMonitoring
1 violation
All resolved
Carbon tetrachlorideMonitoring
1 violation
All resolved
ArsenicMonitoring

A naturally occurring element that can cause cancer and other health effects at high levels.

1 violation
All resolved
HeptachlorMonitoring
1 violation
All resolved
Thallium, TotalMonitoring
1 violation
All resolved
EndrinMonitoring
1 violation
All resolved
DalaponMonitoring
1 violation
All resolved
Xylenes, TotalMonitoring
1 violation
All resolved
OXAMYLMonitoring
1 violation
All resolved
FluorideMonitoring
1 violation
All resolved
Beryllium, TotalMonitoring
1 violation
All resolved
BenzeneMonitoring
1 violation
All resolved
MercuryMonitoring
1 violation
All resolved
EthylbenzeneMonitoring
1 violation
All resolved
Di(2-ethylhexyl) adipateMonitoring
1 violation
All resolved
NickelMonitoring
1 violation
All resolved
PentachlorophenolMonitoring
1 violation
All resolved
cis-1,2-DichloroethyleneMonitoring
1 violation
All resolved
CarbofuranMonitoring
1 violation
All resolved
TetrachloroethyleneMonitoring
1 violation
All resolved
Vinyl chlorideMonitoring
1 violation
All resolved
CHLOROBENZENEMonitoring
1 violation
All resolved
SimazineMonitoring
1 violation
All resolved
PicloramMonitoring
1 violation
All resolved
ChlordaneMonitoring
1 violation
All resolved
DinosebMonitoring
1 violation
All resolved
1,2-DichloroethaneMonitoring
1 violation
All resolved
2,4-DMonitoring
1 violation
All resolved
1,1-DichloroethyleneMonitoring
1 violation
All resolved
AtrazineMonitoring
1 violation
All resolved
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jul 2025

Copper (Cu)

Exceeds limit
1390 ppb measured Action level: 1300 ppb

Sampled: Jan 2024

How Does This Compare?

Aurora (80011) has more violations than 98% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 153.

Fewer violations 98th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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